Paving stone



FIG. 1 is a top plan view of a paving stone showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, taken from the bottom of FIG. 1;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a top perspective view. 

The ornamental design for a paving stone, as shown and described. 